[P1361]

Hi everybody,

I have always thought that when defining a fvMatrix for an equation([a][x] = [b]), the matrix of coefficients ([a]) is introduced using fvm:: operators and everything that goes to the source vector ([b]) should be a geometric field of the same type as the unknown [x] (at least according to the programmers guide).

BUT when trying to add a source term to my energy equation, I used a scalar (not a volScalarField) and it worked!

The implementation is as bellow:

fvScalarMatrix TEqn
(
fvm::ddt(T)
+ fvm::div(phi, T)
- fvm::laplacian(alpha, T)
+ Q
);

where Q has already been defined as:

dimensionedScalar Q
(
transportProperties.lookup("Q")
);


How is it possible?! Could somebody explain me a little bit plz?

Many thanks,

P